Schlumberger Technology Corporation

Robert D Thiessen

Stephen P Lemp

Warren M Zemlak

A wellbore ( ) in an earth formation ( ) having a casing ( ) and a plurality of pay or production zones ( ) provided in the formation. A coiled tubing string ( ) from a reel ( ) is injected by an injector ( ) into the wellbore ( ) for first perforating casing section ( ) at each pay zone ( ) in a single pass of the coiled tubing ( ) as shown in FIG. . Next, the coiled tubing ( ) is utilized for hydraulic fracturing each of the pay zones ( ) individually from the lowermost pay zone ( ) to the uppermost pay zone ( ) in a single pass of the coiled tubing ( ). Each pay zone ( ) is isolated for the hydraulic fracturing. An upper packer ( or ) is provided above each of the pay zones for isolation and a lower packer ( ) or sand plug ( ) is utilized for isolating the lower or outermost end of each pay zone ( ). Swab cups ( A, A, B, B) are also utilized for isolation of pay zones.

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Red Deer, Canada

Robert D Thiessen